Sectional plug structure



Aug. 23, 1932- G. L. CHAMBERLAIN SECTIONAL PLUG STRUCTURE Filed Aug. 14.1929 Illa??? m 2 E W m .M M mm L I E a G m GY B Wzmassas:

titheappended claims, 7. V I a In the accompanying drawing, forming.

Patented Aug. 23, 1932 UNITED- STATES V PATENT oFFicE;

GEORGE L. CHAMBERLAIN, or CHICAGO, 'ILLI voIs Y "SEGTIONAL PLUG"s'riwcrunn I This invention relates to multiple cpnnections, and-moreparticularly to a sectional plug structure, theprincipal object of,theinvention being to simplify and make more practicalsuch structuresso as to facilime the placing of the terminal contact members in theplug, and to attain certain other advantages which will hereinafter morefully s appear; u The invention consists 1n the novel structure and inthe parts and combinations and,'

arrangements of parts as? hereinafter def scribed and set forth withparticularity part of this specification,

Fig. 1 is a side elevation of a plug assembly j illustrating anembodiment of the invent on; .Fig. 2 is a top plan View and section onthe two body sections separated and v Fig. 3 is a section taken on orabout the line 33 of Fig. 1;

Fig. l is a top plan view of the plug body with the terminalcontactsremoved andithe Fig. 5 is a View, in side elevation, of theterminal contactmembers detached. 9

Referring now to the'drawing, thenu-i .meral 10 designatesv generally.the body por- 'ti'on of the device, which'may be composed of a suitableinsulating material such as bake.- lite, vulcanized rubber, porcelain orother suitable material. This member may be of any desired or suitableshape, but, as shown,

it is of general cylindrical form, and it'is provided with alongitudinal rib 11 wh1ch, in use, sli'deably fits in aguidewayrprovided therefor in the'receptaclein which the plug is placed.

the drawing, the'body'lO isinadein two sections 12 and 13, respectively,said sections being produced by dividing the member 10 on two radiallines of division so that the smaller section 13 is ineflect asubstantially wedge shaped segment which fits in a counterpart recess inthe larger member 12. The meeting faces of the two sections 12 and 13are grooved longitudinally as fat and 15, respectively, said groovesregistering when the the socket or tubular type, as. the case may Asshown more clearly in Figs. 2 and 40f Application filed August 14, 1929.Serial No. 385,958.

two sections are assembled, thereby pr odud- Iiangi longitudinal. boresthrough the plug The longitudinal openingsp rovided by the I registeredgrooves 14: and 15 are for the accommodation of terminal contact members16, which obviously may be of the plug'or studtype, as shown in thedrawing, or of u be; These members 16 are preferably pro-f vided withlaterally projecting pins or lugs 17 which fit in'recesses 18 providedtherefor in themember 12 when the parts are assembled, said'projections17 when engaged in said recesses 18 serving to hold said members 16against, endwise as well as rotative m ve: I

ment in the plug body 10.

' The sectionI12 of the plug body 10 is pro-" l vided with alongitudinally extending cir-f cumferentially groove 19 for theaccommodation of terminal contact member 20 which is similar to themembers 16 eXcep't, instead of having the laterally projecting pin orlug 17 thereon,,it is provided with atransverse screw-threadedaperture21 at or aboutthe. same location where said pin'or lug occurs 1on. the member 16. The said screw-threaded opening 21in the member 20 isrovided for the reception of the screw-threa ed end por tion 22 of abolt-23, which latter is passed through alined transverse bores in thebody sections 12'and 13 whereby to hold said body sections againstseparation laterally, as well:

as relative longitudinal movement thereof, 1 the head 2 10f said bolt 23being received in a recess25 provided therefor in the circumfer'en'tialportion of the body section 13.

ment with said members 16=until said two body members 12 and 13 arebrought into relation with each other with their end faces flush. Inthis assembled relation the two body sections 12 and 13 are held againstlateral separation by the interlocking key effect of the terminalcontact members 16 in the grooves 1.141 and 15; After. thetwo bodysections have been thus assembled the terminal contact member 20 isplacedin' the groove or channel 1,9..and aiscrew, bolt .23 ,i s thenapplied, and the cooperative eflect of the engaged terminal contact;member; bolt 23 being to securely clamp the two body sections 12 and 13transnersely and: the same time hold them securely againstindependentlongitudinal movement,

' The respective terminal contact members, 16 and,20 are connectedintheusual manner with the conducting wires 26: In some cases all oftheterminal contact. members will be 7 connectedto the respective wires 26;wh le 111. other? cases only one or two ofsaid terminal contact memberswill be connected, the others dead, aecording-to the particular use tower aepl gt sapp ed- In a y seho Yer,1 ho.1nvent-. 9n v s; pp q b he ltp e rmina device d; o p hong ls th 5 ti onalgstructure em Ody llg; mmnm.m:

ber. ofipartsg and. o lit t ngv he assemb i g.

and, dismantlingoi the u 'turaamt h l I the structure shown illustratesa pract oa m-1 bodimont ofi he inv ntio a W5? n stood that samefimay 9mo o n m ny.

es acts, wltllo t. d pa ting-J f m the 9 1 n {scope oiithejnvntion'asiglefined yth a appended1 :1ja. fI, -,v Theinve no ,t e efor ,a sfiot j mit dl oi he peolfio oon tt tlonani Krangomen ishown-i, I V Haj/11 thusdescribedmy invent on, what Iiclaim as new and desir to oo r byLeters Batentrs; p 1-, lnamul p ewireonn cti n, a s ctional pl body:composed" off nsulat lg mat r a i .1 bodybei gr iv ed n mom a P anthems-1mg gmental; sections ha ng,

' lit st roomn ngular.- mee ing fao s, v sa d; quo ing ce armg gisteringongitudin l groov pr dumg nu mar, openings, in: the s embl odytlfld n tfa' d soo n ha'v g ongir tudihal ircum ere tial;groovatermmal 9 1 tactmembersl fitted in he thus p omd'edi t b l o ning with. transver e nterocknakaywoiiio miiaddi ional; er mnal on act, member emova ly fi ted; 1nari c1ro11mfn means ooopor iungww th. the erminal; co tact m mb n aidlii cumr epe ti l? gr ove for. ur her. securi g, Said. may muons .1 ganst. m sve .e. s p ara on and also-.' preventing relative: ongit dinal;

movementbo weenw aidrb yr sections 2,.I1i. multiple wire o iootfoaibod'yi member ompos d,o f sulatingmat riak pd; iiidpd,onitn';radial'.l nes h n Q P '9 ime. two net.ol ing egmentalse ionswfiosei tudinal movement,

3': El e-hereindescribed multiple wire c0n-. nect-ionicomprising a;substantiallycylindri:

calj plug body of 'insulating'material, said body-beingdi-vided-onradiallines to produce twofseparable sections one of: which isrecessedw-ith angular walls and the other being Ofcunterpartinterfitting form, the meeting faces of said sections havinglongitudinal registering semi cir cular grooves providing bores intheassembledi body, the grooves in one body section having, transverserecesses, 7

one of said body-sect-ions having a longitudinal circumferential groove,terminal contact members fittedfi'n the boresalfordedby the registeredgroovefpor tijonsof the two body sections with laterally interlockingkey effect, 7

said contact members having lateral proj ections engaged in thetransversely recessed portions of the body grooves, an additionalterminal contact member in said; circumfen nt gr o an a bo t; extd g"; rn vo lr r llgh i dy. mem ers and gaging said terminal contact member insaid r umf r tial g oov h reby to rther bind said body sectionstransversely and to s u e and m agains r l i n w ise, move- An. el ctical ir it' onne i g i e comprising a body member composed, of in."

nning. aterial? s d: body being; divided:

into matchingsogmental; tions, the m tmg face f; a dis ot ns being, iagnal y dispo dia d;gro v dflongitu inally ifl repe oJthe'aXi s' ofilie-bocly, tho-groo s in,

he ne. ing, aces; .oft o: ssembled secti n egist rm'gj o, produce.tubular openings through the body, and"electrical conducting elementsfitod in a rt uh ar openings hus Provided with-interlocking keyefli'eotwWhere: by to prev nt tr nsverse. separation, of-isaidi egme talsections, but. permit ing; relati e. longitudinalmovelnont; her f,

An. lotri'oaljfoii n t nnecti g d vi e o p s'i g' ody. member composedofii -f sulfatmg mater1al, said, body, being divided],

into matching segmentalsevctions whose m t;- 1ng faces are angulalilyd'isposeclhand R 'OY d d; with ongitudinal. grooms, r gi ering n;

the assembled relation of the segmental sections to afford tubularopenings in the body, and electrical terminal contact members fitted insaid tubular opening whereby t guide the respective segmental sectionsslidably into cooperative assembled relation to each other, butfunctioning with interlocking key effect to prevent transverseseparation of the assembled sections.

. In testimony whereof I have signed my

